According to the Chasid Ya’avetz, the key verse of the Adar Hallel is, “The heavens are God’s...

Mishlei Tools: Three Weeks: 12:20: Loving Others

“There is joy for people who make plans to do good (Proverbs 12:20).” Rabbi Levi said, “whoever thinks to himself before going to sleep at night, “When I wake up tomorrow I will do good things for So and So,” that person
will ultimately share great joy with the righteous in the Garden of Eden, in the Future World, as the verse says, “There is joy for people who make plans to do good.” [Midrash Mishlei 12:1]

It is appropriate to include this verse. As part of our morning blessings during the Three Weeks with the intention to repair the damage of baseless hatred that led to the disruption of the Second Temple. We should also remember to say to ourselves before going to sleep, “When I wake up tomorrow I will do good things for So and So.”